| 1 | <?xml version="1.0" encoding="UTF-8"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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| 7 | <!-- lightdm -->
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| 8 | <!ENTITY lightdm-download-http "https://github.com/CanonicalLtd/lightdm/releases/download/&lightdm-version;/lightdm-&lightdm-version;.tar.xz">
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| 9 | <!ENTITY lightdm-download-ftp " ">
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| 10 | <!ENTITY lightdm-md5sum "e62a5da6c35f612e4d9575eda5c8d467">
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| 11 | <!ENTITY lightdm-size "508 KB">
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| 12 | <!ENTITY lightdm-buildsize "20 MB">
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| 13 | <!ENTITY lightdm-time "0.2 SBU ">
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| 14 |
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| 15 | <!-- lightdm-gtk-greeter -->
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| 16 | <!ENTITY lightdm-gtk-greeter-download-http "https://github.com/Xubuntu/lightdm-gtk-greeter/releases/download/lightdm-gtk-greeter-&lightdm-gtk-greeter-version;/lightdm-gtk-greeter-&lightdm-gtk-greeter-version;.tar.gz">
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| 17 | <!ENTITY lightdm-gtk-greeter-download-ftp " ">
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| 18 | <!ENTITY lightdm-gtk-greeter-md5sum "35752d730f39293c2bbe884ef6963830">
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| 19 | <!ENTITY lightdm-gtk-greeter-size "592 KB">
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| 20 | <!ENTITY lightdm-gtk-greeter-buildsize "5.2 MB">
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| 21 | <!ENTITY lightdm-gtk-greeter-time "less than 0.1 SBU ">
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| 22 | ]>
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| 23 |
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| 24 | <sect1 id="lightdm" xreflabel="lightdm-&lightdm-version;">
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| 25 | <?dbhtml filename="lightdm.html"?>
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| 26 |
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| 27 |
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| 28 | <title>lightdm-&lightdm-version;</title>
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| 29 |
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| 30 | <indexterm zone="lightdm">
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| 31 | <primary sortas="a-lightdm">lightdm</primary>
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| 32 | </indexterm>
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| 33 |
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| 34 | <sect2 role="package">
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| 35 | <title>Introduction to Lightdm</title>
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| 36 |
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| 37 | <para>
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| 38 | The <application>lightdm</application> package contains a lightweight
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| 39 | display manager based upon GTK.
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| 40 | </para>
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| 41 |
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| 42 | &lfs121_checked;
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| 43 |
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| 44 | <bridgehead renderas="sect3">Lightdm Package Information</bridgehead>
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| 45 | <itemizedlist spacing="compact">
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| 46 | <listitem>
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| 47 | <para>
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| 48 | Download (HTTP): <ulink url="&lightdm-download-http;"/>
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| 49 | </para>
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| 50 | </listitem>
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| 51 | <listitem>
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| 52 | <para>
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| 53 | Download (FTP): <ulink url="&lightdm-download-ftp;"/>
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| 54 | </para>
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| 55 | </listitem>
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| 56 | <listitem>
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| 57 | <para>
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| 58 | Download MD5 sum: &lightdm-md5sum;
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| 59 | </para>
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| 60 | </listitem>
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| 61 | <listitem>
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| 62 | <para>
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| 63 | Download size: &lightdm-size;
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| 64 | </para>
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| 65 | </listitem>
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| 66 | <listitem>
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| 67 | <para>
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| 68 | Estimated disk space required: &lightdm-buildsize;
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| 69 | </para>
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| 70 | </listitem>
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| 71 | <listitem>
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| 72 | <para>
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| 73 | Estimated build time: &lightdm-time;
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| 74 | </para>
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| 75 | </listitem>
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| 76 | </itemizedlist>
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| 77 |
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| 78 | <bridgehead renderas="sect3">Additional download</bridgehead>
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| 79 |
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| 80 | <note>
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| 81 | <para>
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| 82 | The greeter is a program to present a graphical login screen. There
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| 83 | are several alternative greeters, but the gtk+ package is the reference
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| 84 | implementation. For a list of other greeters, see <ulink
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| 85 | url="https://en.wikipedia.org/wiki/LightDM"/>.
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| 86 | </para>
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| 87 | </note>
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| 88 |
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| 89 | <itemizedlist spacing="compact">
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| 90 | <listitem>
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| 91 | <para>
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| 92 | Download (HTTP): <ulink url="&lightdm-gtk-greeter-download-http;"/>
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| 93 | </para>
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| 94 | </listitem>
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| 95 | <listitem>
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| 96 | <para>
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| 97 | Download (FTP): <ulink url="&lightdm-gtk-greeter-download-ftp;"/>
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| 98 | </para>
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| 99 | </listitem>
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| 100 | <listitem>
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| 101 | <para>
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| 102 | Download MD5 sum: &lightdm-gtk-greeter-md5sum;
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| 103 | </para>
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| 104 | </listitem>
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| 105 | <listitem>
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| 106 | <para>
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| 107 | Download size: &lightdm-gtk-greeter-size;
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| 108 | </para>
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| 109 | </listitem>
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| 110 | <listitem>
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| 111 | <para>
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| 112 | Estimated disk space required: &lightdm-gtk-greeter-buildsize;
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| 113 | </para>
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| 114 | </listitem>
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| 115 | <listitem>
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| 116 | <para>
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| 117 | Estimated build time: &lightdm-gtk-greeter-time;
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| 118 | </para>
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| 119 | </listitem>
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| 120 | </itemizedlist>
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| 121 |
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| 122 | <bridgehead renderas="sect3">Lightdm Dependencies</bridgehead>
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| 123 |
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| 124 | <bridgehead renderas="sect4">Required</bridgehead>
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| 125 | <para role="required">
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| 126 | <xref linkend="exo"/> (for the greeter),
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| 127 | <!-- required by exo <xref linkend="gtk3"/>, -->
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| 128 | <xref linkend="libgcrypt"/>,
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| 129 | <xref linkend="itstool"/>,
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| 130 | <xref linkend="linux-pam"/>, and
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| 131 | <xref role='runtime' linkend='xorg-server'/> (Runtime)
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| 132 | </para>
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| 133 |
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| 134 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 135 | <para role="recommended">
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| 136 | &gobject-introspection;,
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| 137 | <xref linkend="libxklavier"/>, and
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| 138 | <xref linkend="vala"/>
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| 139 | </para>
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| 140 |
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| 141 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 142 | <para role="optional">
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| 143 | <xref role="runtime" linkend="accountsservice"/> (run time),
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| 144 | <xref linkend="at-spi2-core"/>,
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| 145 | <xref linkend="gtk-doc"/>,
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| 146 | &qt5-deps;,
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| 147 | <ulink url="https://launchpad.net/ido">libido</ulink>, and
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| 148 | <ulink url="https://launchpad.net/libindicator">libindicator</ulink>
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| 149 |
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| 150 | </para>
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| 151 |
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| 152 | </sect2>
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| 153 |
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| 154 | <sect2 role="installation">
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| 155 | <title>Installation of Lightdm</title>
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| 156 |
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| 157 | <para>
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| 158 | First, create a dedicated user and group to take
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| 159 | control of the <command>lightdm</command> daemon after it is
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| 160 | started. Issue the following commands as the
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| 161 | <systemitem class="username">root</systemitem> user:
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| 162 | </para>
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| 163 |
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| 164 | <screen role="root"><userinput>groupadd -g 65 lightdm &&
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| 165 | useradd -c "Lightdm Daemon" \
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| 166 | -d /var/lib/lightdm \
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| 167 | -u 65 -g lightdm \
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| 168 | -s /bin/false lightdm</userinput></screen>
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| 169 |
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| 170 | <para revision="sysv">
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| 171 | Then change the <application>Linux-PAM</application> configuration files
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| 172 | so that <application>elogind</application> is used:
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| 173 | </para>
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| 174 |
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| 175 | <screen revision="sysv"><userinput>sed -i s/systemd/elogind/ data/pam/*</userinput></screen>
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| 176 |
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| 177 | <para>
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| 178 | Install <application>lightdm</application> by running the following
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| 179 | commands:
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| 180 | </para>
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| 181 |
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| 182 | <screen><userinput>./configure --prefix=/usr \
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| 183 | --libexecdir=/usr/lib/lightdm \
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| 184 | --localstatedir=/var \
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| 185 | --sbindir=/usr/bin \
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| 186 | --sysconfdir=/etc \
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| 187 | --disable-static \
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| 188 | --disable-tests \
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| 189 | --with-greeter-user=lightdm \
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| 190 | --with-greeter-session=lightdm-gtk-greeter \
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| 191 | --docdir=/usr/share/doc/lightdm-&lightdm-version; &&
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| 192 | make</userinput></screen>
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| 193 |
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| 194 | <para>
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| 195 | This package does not come with a test suite.
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| 196 | </para>
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| 197 |
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| 198 | <para>
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| 199 | Now, as the <systemitem class="username">root</systemitem> user:
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| 200 | </para>
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| 201 |
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| 202 | <screen role="root"><userinput>make install &&
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| 203 | cp tests/src/lightdm-session /usr/bin &&
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| 204 | sed -i '1 s/sh/bash --login/' /usr/bin/lightdm-session &&
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| 205 | rm -rf /etc/init &&
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| 206 | install -v -dm755 -o lightdm -g lightdm /var/lib/lightdm &&
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| 207 | install -v -dm755 -o lightdm -g lightdm /var/lib/lightdm-data &&
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| 208 | install -v -dm755 -o lightdm -g lightdm /var/cache/lightdm &&
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| 209 | install -v -dm770 -o lightdm -g lightdm /var/log/lightdm</userinput></screen>
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| 210 |
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| 211 | <para>
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| 212 | Now build the greeter:
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| 213 | </para>
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| 214 |
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| 215 | <screen><userinput>tar -xf ../lightdm-gtk-greeter-&lightdm-gtk-greeter-version;.tar.gz &&
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| 216 | cd lightdm-gtk-greeter-&lightdm-gtk-greeter-version; &&
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| 217 |
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| 218 | ./configure --prefix=/usr \
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| 219 | --libexecdir=/usr/lib/lightdm \
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| 220 | --sbindir=/usr/bin \
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| 221 | --sysconfdir=/etc \
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| 222 | --with-libxklavier \
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| 223 | --enable-kill-on-sigterm \
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| 224 | --disable-libido \
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| 225 | --disable-libindicator \
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| 226 | --disable-static \
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| 227 | --disable-maintainer-mode \
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| 228 | --docdir=/usr/share/doc/lightdm-gtk-greeter-&lightdm-gtk-greeter-version; &&
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| 229 | make</userinput></screen>
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| 230 |
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| 231 | <para>
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| 232 | Now, as the <systemitem class="username">root</systemitem> user:
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| 233 | </para>
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| 234 |
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| 235 | <screen role="root"><userinput>make install</userinput></screen>
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| 236 |
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| 237 | <note>
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| 238 | <para>
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| 239 | If you installed Xorg in /opt, you will need to create a symbolic
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| 240 | link so lightdm can find the Xorg server. As the
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| 241 | <systemitem class="username">root</systemitem> user:
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| 242 | </para>
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| 243 |
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| 244 | <screen role="nodump"><userinput>ln -sf /opt/xorg/bin/Xorg /usr/bin/X</userinput></screen>
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| 245 | </note>
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| 246 |
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| 247 |
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| 248 | </sect2>
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| 249 |
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| 250 | <sect2 role="commands">
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| 251 | <title>Command Explanations</title>
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| 252 | <para>
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| 253 |
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| 254 | <command>sed ... /usr/bin/lightdm-session</command>:
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| 255 | This command ensures that the initial login via the greeter sources
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| 256 | /etc/profile and ~/.bash_profile. Without this, commands that depend on
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| 257 | different environment variables may not work as expected.
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| 258 | </para>
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| 259 | <!--
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| 260 | <para>
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| 261 | <parameter>ITSTOOL=/bin/true</parameter>: although
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| 262 | <xref linkend="itstool"/> is not needed in a normal build,
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| 263 | <command>configure</command> throws an error if it is not found on the
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| 264 | system. This parameter prevents the error.
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| 265 | </para>
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| 266 |
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| 267 | <para>
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| 268 | <parameter>HAVE_EXO_CSOURCE=yes</parameter>: although
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| 269 | <command>exo-csource</command> is not needed in a normal build,
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| 270 | <command>configure</command> throws an error if it is not found on the
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| 271 | system. This parameter prevents the error.
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| 272 | </para>
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| 273 | -->
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| 274 | </sect2>
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| 275 |
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| 276 | <sect2 role="configuration">
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| 277 | <title>Configuring lightdm</title>
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| 278 |
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| 279 | <sect3 id="lightdm-config">
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| 280 | <title>Config Files</title>
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| 281 |
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| 282 | <para>
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| 283 | /etc/lightdm/{lightdm,users,keys,lightdm-gtk-greeter}.conf
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| 284 | </para>
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| 285 |
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| 286 | <para>
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| 287 | The configuration files offer many options. If, for instance, you have
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| 288 | a multiple monitor setup but prefer the login window to be displayed on
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| 289 | only one monitor, set 'active-monitor=<monitor-name>' in
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| 290 | <filename>lightdm-gtk-greeter.conf</filename>. For example you could
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| 291 | use <option>active-monitor=HDMI-1</option>. You can determine the
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| 292 | monitor-names with <command>xrandr --listmonitors</command>. Note that
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| 293 | the monitor names may change if you change the graphics driver
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| 294 | and you may have to adjust the configuration accordingly.
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| 295 | </para>
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| 296 |
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| 297 | <indexterm zone="lightdm lightdm-config">
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| 298 | <primary sortas="e-etc-lightdm-lightdm.conf">/etc/lightdm/lightdm.conf</primary>
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| 299 | </indexterm>
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| 300 |
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| 301 | <indexterm zone="lightdm lightdm-config">
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| 302 | <primary sortas="e-users.conf">/etc/lightdm/users.conf</primary>
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| 303 | </indexterm>
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| 304 |
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| 305 | <indexterm zone="lightdm lightdm-config">
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| 306 | <primary sortas="e-keys.conf">/etc/lightdm/keys.conf</primary>
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| 307 | </indexterm>
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| 308 |
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| 309 | <indexterm zone="lightdm lightdm-config">
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| 310 | <primary sortas="e-lightdm-gtk-greeter.conf">
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| 311 | /etc/lightdm/lightdm-gtk-greeter.conf</primary>
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| 312 | </indexterm>
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| 313 |
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| 314 | </sect3>
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| 315 |
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| 316 | <sect3 id="lightdm-bootscript">
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| 317 | <title><phrase revision="sysv">Boot Script</phrase>
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| 318 | <phrase revision="systemd">Systemd Unit</phrase></title>
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| 319 |
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| 320 | <indexterm zone="lightdm lightdm-bootscript">
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| 321 | <primary sortas="f-lightdm">lightdm</primary>
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| 322 | </indexterm>
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| 323 |
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| 324 | <para revision="sysv">
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| 325 | To start <command>lightdm</command> automatically when the system is
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| 326 | switched to runlevel 5, install the
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| 327 | <filename>/etc/rc.d/init.d/xdm</filename> script and the
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| 328 | <filename>/etc/sysconfig/xdm</filename> configuration file
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| 329 | included in the <xref linkend="bootscripts"/> package
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| 330 | and adjust <filename>/etc/inittab</filename> by running
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| 331 | as the <systemitem class="username">root</systemitem> user:
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| 332 | </para>
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| 333 |
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| 334 | <screen role="root" revision="sysv"><userinput>make install-lightdm</userinput></screen>
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| 335 |
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| 336 | <para revision="systemd">
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| 337 | Install the <filename>lightdm.service</filename> unit included in
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| 338 | the <xref linkend="systemd-units"/> package:
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| 339 | </para>
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| 340 |
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| 341 | <screen role="root" revision="systemd"><userinput>make install-lightdm</userinput></screen>
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| 342 |
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| 343 | </sect3>
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| 344 | <sect3 id="lightdm-init" revision="sysv">
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| 345 | <title>Starting lightdm</title>
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| 346 |
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| 347 | <para>
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| 348 | The <command>lightdm</command> greeter can be started from the
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| 349 | command line as the <systemitem class="username">root</systemitem>
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| 350 | user:
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| 351 | </para>
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| 352 |
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| 353 | <screen role="nodump"><userinput>telinit 5</userinput></screen>
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| 354 |
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| 355 | <!-- "make install-lightdm already does this already
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| 356 | <para>
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| 357 | Alternatively the runlevel can be permanently set to 5, starting the
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| 358 | <command>lightdm</command> greeter screen automatically, by modifying
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| 359 | <filename>/etc/inittab</filename>. As the <systemitem
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| 360 | class="username">root</systemitem> user:
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| 361 | </para>
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| 362 |
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| 363 | <screen role="root"><userinput>cp -v /etc/inittab{,-orig} &&
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| 364 | sed -i '/initdefault/ s/3/5/' /etc/inittab</userinput></screen>
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| 365 | -->
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| 366 | </sect3>
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| 367 |
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| 368 | <sect3 id="lightdm-sessions">
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| 369 | <title>Available Sessions</title>
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| 370 |
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| 371 | <para>
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| 372 | The greeter offers a list of available sessions,
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| 373 | depending on the Window Managers and Desktop Environments installed. The
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| 374 | list includes sessions which have a corresponding
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| 375 | <filename>.desktop</filename> file installed under
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| 376 | <filename class="directory">/usr/share/xsessions</filename>. Most of the
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| 377 | Window Managers and Desktop Environments automatically provide those
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| 378 | files, but if necessary, you may include a custom one.
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| 379 | </para>
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| 380 |
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| 381 | </sect3>
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| 382 |
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| 383 | </sect2>
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| 384 |
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| 385 | <sect2 role="content">
|
|---|
| 386 | <title>Contents</title>
|
|---|
| 387 |
|
|---|
| 388 | <segmentedlist>
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|---|
| 389 | <segtitle>Installed Programs</segtitle>
|
|---|
| 390 | <segtitle>Installed Libraries</segtitle>
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| 391 | <segtitle>Installed Directories</segtitle>
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| 392 |
|
|---|
| 393 | <seglistitem>
|
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| 394 | <seg>
|
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| 395 | dm-tool,
|
|---|
| 396 | lightdm, and
|
|---|
| 397 | lightdm-gtk-greeter
|
|---|
| 398 | </seg>
|
|---|
| 399 | <seg>
|
|---|
| 400 | liblightdm-gobject-1.so
|
|---|
| 401 | </seg>
|
|---|
| 402 | <seg>
|
|---|
| 403 | /etc/lightdm,
|
|---|
| 404 | /etc/apparmor.d,
|
|---|
| 405 | /usr/lib/lightdm,
|
|---|
| 406 | /usr/include/lightdm-gobject-1,
|
|---|
| 407 | /usr/share/help/C/lightdm
|
|---|
| 408 | /usr/share/gtk-doc/html/lightdm-gobject-1,
|
|---|
| 409 | /usr/share/doc/lightdm-gtk-greeter-&lightdm-gtk-greeter-version;,
|
|---|
| 410 | /var/lib/lightdm,
|
|---|
| 411 | /var/lib/lightdm-data,
|
|---|
| 412 | /var/cache/lightdm, and
|
|---|
| 413 | /var/log/lightdm
|
|---|
| 414 | </seg>
|
|---|
| 415 | </seglistitem>
|
|---|
| 416 | </segmentedlist>
|
|---|
| 417 |
|
|---|
| 418 | <variablelist>
|
|---|
| 419 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
|---|
| 420 | <?dbfo list-presentation="list"?>
|
|---|
| 421 | <?dbhtml list-presentation="table"?>
|
|---|
| 422 |
|
|---|
| 423 | <varlistentry id="lightdm-prog">
|
|---|
| 424 | <term><command>lightdm</command></term>
|
|---|
| 425 | <listitem>
|
|---|
| 426 | <para>
|
|---|
| 427 | is a display and login manager
|
|---|
| 428 | </para>
|
|---|
| 429 | <indexterm zone="lightdm lightdm-prog">
|
|---|
| 430 | <primary sortas="b-lightdm">lightdm</primary>
|
|---|
| 431 | </indexterm>
|
|---|
| 432 | </listitem>
|
|---|
| 433 | </varlistentry>
|
|---|
| 434 |
|
|---|
| 435 | <varlistentry id="lightdm-gtk-greeter">
|
|---|
| 436 | <term><command>lightdm-gtk-greeter</command></term>
|
|---|
| 437 | <listitem>
|
|---|
| 438 | <para>
|
|---|
| 439 | is an auxiliary process that displays the greeter,
|
|---|
| 440 | a graphical user interface that performs user
|
|---|
| 441 | authentication and initiates the selected window manager
|
|---|
| 442 | or display environment
|
|---|
| 443 | </para>
|
|---|
| 444 | <indexterm zone="lightdm lightdm-gtk-greeter">
|
|---|
| 445 | <primary sortas="b-lightdm-gtk-greeter">lightdm-gtk-greeter</primary>
|
|---|
| 446 | </indexterm>
|
|---|
| 447 | </listitem>
|
|---|
| 448 | </varlistentry>
|
|---|
| 449 |
|
|---|
| 450 | </variablelist>
|
|---|
| 451 |
|
|---|
| 452 | </sect2>
|
|---|
| 453 |
|
|---|
| 454 | </sect1>
|
|---|
